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Acid Orange 7, also known as 2-naphthol orange is an azo dye. It is used for dyeing wool. Preparation It is ...
Orange GGN, also known as alpha-naphthol orange, is an azo dye [1] formerly used as a food dye.It is the disodium salt of 1-(m-sulfophenylazo)-2-naphthol-6-sulfonic acid.In Europe, it was denoted by the E Number E111, but has been forbidden for use in foods since 1 January 1978. [2]
2-Naphthol, or β-naphthol, is a fluorescent colorless (or occasionally yellow) crystalline solid with the formula C 10 H 7 OH. It is an isomer of 1-naphthol , differing by the location of the hydroxyl group on the naphthalene ring.
2-Naphthol: β-naphthol Azoic coupling component 1 37500 diazonium salt 135-19-3: Naphthol green B: Acid green 1 10020 nitroso 19381-50-1: Naphthol yellow S: Sulfur yellow S Acid yellow 1 Food yellow 1 10316 nitro 846-70-8: Naphthylamin Brown F Acid brown 6 14625 azo 6419-10-5: Neutral red: Toluylene red Basic red 5 50040 eurhodin 553-24-2: New ...
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1-Nitroso-2-naphthol can be prepared by treatment of 2-naphthol with nitrous acid: [3] C 10 H 7 OH + HNO 2 → C 10 H 6 (NO)OH + H 2 O. Its conjugate base forms deeply colored complexes with iron(II) and cobalt(II), complexes [M(C 10 H 6 (NO)O) 3] 2-. [4] The deep colors of these complexes results from the delocalized bonding within each five ...
Acid Orange 7; Usage on en.wikibooks.org A-level Applied Science/Colour Chemistry/Dyes; Usage on fa.wikipedia.org اسید نارنجی ۷; Usage on fi.wikipedia.org Käyttäjä:Nitraus/A; Oranssi II; Usage on mk.wikipedia.org Кисел оранж 7; Usage on pt.wikipedia.org Alaranjado II; Usage on sh.wikipedia.org Kiseli oranž 7; Usage on ...
2-Naphthalenethiol is an organosulfur compound with the formula C 10 H 7 SH. It is a white solid. It is a white solid. It is one of two mono thiols of naphthalene , the other being 1-naphthalenethiol .